Will additional coats of Glare Polish build up and potentially ruin my paint?

No, absolutely not. Additional coats of Glare will actually make your paint shinier. Because Glare is semi-permanent, it doesn’t have acrylics and resins in it that can build up. Don’t be fooled by other waxes that have acrylics and resins in their formulation to make it shinier. Just imagine, would you want to put an acrylic protection coat on your car? The same type of material used in women’s nail polish. That will eventually crack and fall off later on. I don’t think so.